MPEC 2008-P56 : 2007 SR1
The following Minor Planet Electronic Circular may be linked-to from your own Web pages, but must not otherwise be redistributed electronically.
Read MPEC 2008-P55
Read MPEC 2008-P57
M.P.E.C. 2008-P56 Issued 2008 Aug. 12, 03:05 UT
The Minor Planet Electronic Circulars contain information on unusual
minor planets and routine data on comets. They are published
on behalf of Commission 20 of the International Astronomical Union by the
Minor Planet Center, Smithsonian Astrophysical Observatory,
Cambridge, MA 02138, U.S.A.
Prepared using the Tamkin Foundation Computer Network
MPC@CFA.HARVARD.EDU
URL http://www.cfa.harvard.edu/iau/mpc.html ISSN 1523-6714
2007 SR1
Revision to MPEC 2007-S31
Additional Observations:
K07S01R C2008 08 08.38890 01 54 33.15 -10 00 12.8 21.8 V EP056H55
K07S01R C2008 08 08.39797 01 54 32.63 -10 00 14.7 21.4 V EP056H55
K07S01R C2008 08 08.40795 01 54 32.04 -10 00 17.1 21.5 V EP056H55
K07S01R C2008 08 11.37984 01 51 43.17 -10 07 32.8 21.7 V EP056H55
K07S01R C2008 08 11.38819 01 51 42.68 -10 07 35.3 21.7 V EP056H55
K07S01R C2008 08 11.39710 01 51 42.10 -10 07 38.0 21.5 V EP056H55
Observer details:
H55 Astronomical Research Observatory, Charleston. Observer R. Holmes.
0.61-m f/4.0 astrograph + CCD.
First and last observations above in comparison with prediction:
Residuals in seconds of arc, reference and Delta-T
080808 H55 3.2+ 9.4+ 080811 H55 3.4+ 6.4+ MPO128952 -0.00029 day
Orbital elements:
2007 SR1 Earth MOID = 0.2990 AU
Epoch 2008 May 14.0 TT = JDT 2454600.5 MPC
M 34.94380 (2000.0) P Q
n 0.91653416 Peri. 177.48710 -0.99258427 +0.10867113
a 1.0496317 Node 9.29665 -0.11658046 -0.72409187
e 0.4991116 Incl. 19.70537 -0.03443061 -0.68108850
P 1.08 H 19.8 G 0.15 U 5
Residuals in seconds of arc
070918 691 0.0 0.2- 070930 291 1.0+ 0.2+ 071019 291 (1.7- 0.1+)
070918 691 0.5- 0.2- 070930 673 0.0 0.0 071019 291 0.1+ 0.6+
070918 691 0.4+ 0.2+ 070930 673 0.0 0.1- 071019 291 0.3+ 0.1+
070919 291 0.4- 0.2- 070930 673 (1.6+ 0.1-) 071021 G96 0.2- 0.1+
070919 H55 0.3- 1.1- 070930 673 0.9- 0.2+ 071021 G96 0.2+ 0.0
070919 291 0.7- 0.4- 071004 291 0.6- 0.3- 071021 G96 0.1- 0.1+
070919 H55 0.4+ 0.4- 071004 291 1.0+ 0.4+ 071021 G96 0.2- 0.9+
070919 291 0.2- 0.2- 071004 291 (2.2- 0.6-) 071029 H55 1.2+ 0.4+
070919 H55 0.4+ 0.6- 071008 448 1.2+ 0.5+ 071029 H55 0.4+ 0.4+
070919 204 0.3+ 0.2- 071008 448 1.3+ 0.4+ 071029 H55 1.0- 0.5+
070920 204 0.0 0.0 071008 448 0.4+ 0.1+ 071030 H55 1.3+ 0.1-
070920 291 0.5- 0.1- 071013 448 0.0 0.5- 071030 H55 0.4- 0.2+
070920 291 0.9- 0.4- 071013 448 0.6+ 0.1- 071030 H55 0.7+ 0.5+
070920 291 0.1+ 0.1- 071013 448 0.2+ 0.5- 071110 H55 0.5- 0.5+
070924 H55 0.4+ 0.1+ 071013 560 0.2+ 0.9+ 071110 H55 0.5+ 1.7+
070924 H55 0.7+ 0.4+ 071013 560 0.9+ 0.1- 071110 H55 0.3- 1.7+
070924 H55 0.2+ 0.0 071013 560 0.4+ 0.0 080808 H55 0.6+ 1.7+
070924 291 0.1+ 0.0 071015 246 0.5+ 0.6+ 080808 H55 0.2+ 1.0+
070924 291 0.0 0.2+ 071015 246 0.8+ 0.2- 080808 H55 0.4- 0.1-
070924 291 0.4- 0.2- 071015 246 0.1+ 0.7- 080811 H55 0.9- 0.7+
070930 291 0.9- 0.3- 071015 246 1.0+ 1.0- 080811 H55 0.2+ 0.4-
070930 291 0.6- 0.2- 071015 246 0.5+ 0.1- 080811 H55 0.5+ 1.5-
Ephemeris:
2007 SR1 a,e,i = 1.05, 0.50, 20 q = 0.5257
Date TT R. A. (2000) Decl. Delta r Elong. Phase V
2008 08 12 01 51.05 -10 09.1 0.663 1.432 115.8 39.6 21.3
2008 08 22 01 35.98 -10 47.5 0.611 1.471 128.4 32.6 20.9
2008 09 01 01 12.12 -11 37.8 0.570 1.504 142.8 23.9 20.6
2008 09 11 00 40.08 -12 20.9 0.549 1.530 158.2 14.1 20.2
2008 09 21 00 03.88 -12 33.1 0.554 1.550 167.9 7.8 20.0
2008 10 01 23 29.75 -12 02.6 0.588 1.564 158.7 13.5 20.4
2008 10 11 23 02.84 -10 55.4 0.648 1.571 144.5 21.7 20.9
2008 10 21 22 44.90 -09 26.3 0.728 1.573 131.3 28.4 21.3
2008 10 31 22 35.17 -07 46.3 0.820 1.569 119.7 33.3 21.7
Gareth V. Williams (C) Copyright 2008 MPC M.P.E.C. 2008-P56
Read MPEC 2008-P55
Read MPEC 2008-P57
Our Web policy. Index to the CBAT/MPC/ICQ pages.
